remove additional build messages

these messages do not add any useful informations, plus it contrasts with
the behaviour of the main makefile. A unified experience is much prefered
in my opinion

tester/Makefile

@@ -15,9 +15,7 @@ $(OBJ_DIR)/%.o:  $(SRC_DIR)/%.c $(OBJ_DIR)
 	$(CC) $(CPPFLAGS) -Wno-unused-parameter -c $< -o $@
 
 $(BIN): $(OBJS)
-	@printf "\033[1;33m[Linking]\033[0m \n"
 	$(CC) $^ -o $@ $(LDFLAGS)
-	@printf "\033[0;32mCompilation finished successfully !\n\033[0m"
 
 $(OBJ_DIR):
 	mkdir -p $(OBJ_DIR)